Let x be amount of music lessons
Member ＝ 100 + 20x
Non member ＝ 30x
Must be same, so 100 + 20x ＝ 30x
Solve for x:
Group like terms.
100 ＝ 30x － 20x
100 ＝ 10x
100/10 ＝ x
x＝10
10 music lessons for member and non member to have same costs of $300.
Im not very good at maths. But this seems easy :D. I'm still a beginner, but please give me points.
Answer:
2x + 2y
Step-by-step explanation:
2 (x+y)
You distribute the properties and you get:
2x + 2y
For Janna to prove that △ABC∼△DEF by the SSS similarity theorem, she will use: B. DE/AB = EF/BC = DF/AC = 1/4.
<h3>What is the SSS Similarity Theorem?</h3>
According to the SSS similarity theorem, if the ratio of the corresponding sides of two triangles are equal, then both triangles are similar.
The ratio of the corresponding sides of the triangles given are:
DE/AB = 4/16 = 1/4
EF/BC = 3.25/13 = 1/4
DF/AC = 1.75/7 = 1/4
Therefore, what Janna needs is:
B. DE/AB = EF/BC = DF/AC = 1/4
Learn more about the SSS similarity theorem on:
brainly.com/question/4163594
#SPJ1
Answer:
8.66cm
Step-by-step explanation:
google
